Tom Lane wrote:
> "Rushabh Lathia" <rushabh(dot)lathia(at)gmail(dot)com> writes:
>
>> Simple select give wrong result when it uses the Bitmap Heap Scan path.
>>
>
> It's generally appropriate to mention which PG version you're working
> with when you report a bug.
>
I was on 8.4 CVS Head, Next time will sure take care of this.
>
>> postgres=# explain select proname from pg_proc where proname like 'my_pro1';
>> QUERY
>> PLAN
>>
>
>
>> --------------------------------------------------------------------------------
>> -------------
>> Bitmap Heap Scan on pg_proc (cost=4.26..8.27 rows=1 width=64)
>> Recheck Cond: (proname ~~ 'my_pro1'::text)
>> -> Bitmap Index Scan on pg_proc_proname_args_nsp_index (cost=0.00..4.26
>> row
>> s=1 width=0)
>> Index Cond: ((proname >= 'my'::name) AND (proname < 'mz'::name))
>> (4 rows)
>>
>
> Hmm, the ~~ condition should get treated as a "filter" not a "recheck".
> I suppose I broke this somewhere ...
>
Oh ok.
> regards, tom lane
>